Wang Yuyang, Chen Shuoran, Xu Zongyi, Bao Xiwei, Dong Yuxiang, Li Lin, Shi Yizhong, Wan Shigang, Ye Changqing
Research Center for Green Printing Nanophotonic Materials, Suzhou Key Laboratory for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Suzhou University of Science and Technology, 215009 Suzhou, China.
Research Center for Green Printing Nanophotonic Materials, Suzhou Key Laboratory for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Suzhou University of Science and Technology, 215009 Suzhou, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2025 Jan 5;324:125039. doi: 10.1016/j.saa.2024.125039. Epub 2024 Aug 25.
A ratiometric nanosensor was developed for detecting methyl orange (MO) based on down/up-conversion luminescence achieved by a triplet-triplet annihilation upconversion luminescence (TTA-UCL) system. The probe, utilizing sensitizer and annihilator fluorophores encapsulated in nanomicelles, demonstrated high sensitivity and selectivity for MO detection. The energy transfer from UCL to MO endowed the sensor with responsive capabilities. The unaffected triplet-triplet energy transfer process maintained the phosphorescence signal constant, serving as a reference to construct the ratiometric sensor along with the UCL signal. Additionally, a smartphone-assisted colorimetric detection method was also developed based on the ratiometric sensor, enabling rapid and convenient detection of MO without the need for a spectrometer. The performance of the nanosensor in real water samples confirmed its potential for practical environmental applications.
基于三重态-三重态湮灭上转换发光（TTA-UCL）系统实现的下转换/上转换发光，开发了一种用于检测甲基橙（MO）的比率纳米传感器。该探针利用封装在纳米胶束中的敏化剂和湮灭剂荧光团，对MO检测表现出高灵敏度和选择性。从UCL到MO的能量转移赋予了传感器响应能力。未受影响的三重态-三重态能量转移过程使磷光信号保持恒定，与UCL信号一起作为构建比率传感器的参考。此外，还基于该比率传感器开发了一种智能手机辅助比色检测方法，无需光谱仪即可快速方便地检测MO。纳米传感器在实际水样中的性能证实了其在实际环境应用中的潜力。
